well, back in my teens, the 440 was about performance. A 340 Duster with a mild street cam and headers went 13's. Same with a 440 went 12's. Of course, times have changed. Nowadays small blocks yawn at 12's on the street, in fact I'm about there with a stock one and 2.94's. So for me now it's about the big block Duster and not so much the performance.
Well as long as they don't send you Ford heads LOL.. (of course Only my luck could produce that..) it shouldn't take them long to get there.. if you start a thread or something taking them apart please let me know..